PRINCIPLES OF DATA QUALITY Arthur D. Chapman1 Although most data gathering disciples treat error as an embarrassing issue to be expunged‚ the error inherent in [spatial] data deserves closer attention and public understanding …because error provides a critical component in judging fitness for use. (Chrisman 1991). Australian Biodiversity Information Services PO Box 7491‚ Toowoomba South‚ Qld‚ Australia email: papers.digit@gbif.org 1 © 2005‚ Global Biodiversity Information Facility Material
Premium Data management
Introduction to Data Modeling and MSAccess CONTENT 1 2 3 4 5 6 Introduction to Data Modeling ............................................................................................................... 5 1.1 Data Modeling Overview ............................................................................................................... 5 1.1.1 Methodology .......................................................................................................................... 6 1.1.2 Data Modeling
Premium Entity-relationship model Data modeling
Databases and Data Communication BIS 320 September 16‚ 2013 Lisa Ricks Databases and Data Communication Databases are great when you want to create a model of data such as numbers for figuring out how much you can spend on a new home when you are in the buying marketing‚ you can use excel to figure out how much you can spend and a monthly payment. You can also use a database to track of shipping components from a trade show that you are in charge of. You can use a database to organize
Premium Computer network Local area network Virtual private network
you an understanding of how data resources are managed in information systems by analyzing the managerial implications of basic concept and applications of database management. Introduce the concept of data resource management and stresses the advantages of the database management approach. It also stresses the role of database management system software and the database administration function. Finally‚ it outlines several major managerial considerations of data resource management.
Premium Database model Database SQL
c. ratio scale d. interval scale 2. Data obtained from a nominal scale a. must be alphabetic b. can be either numeric or nonnumeric c. must be numeric d. must rank order the data 3. In a post office‚ the mailboxes are numbered from 1 to 4‚500. These numbers represent a. qualitative data b. quantitative data c. either qualitative or quantitative data d. since the numbers are sequential‚ the data is quantitative 4. A tabular summary of a set of data showing the fraction of the total number
Free Random variable Standard deviation
Package ‘randomForest’ February 20‚ 2015 Title Breiman and Cutler ’s random forests for classification and regression Version 4.6-10 Date 2014-07-17 Depends R (>= 2.5.0)‚ stats Suggests RColorBrewer‚ MASS Author Fortran original by Leo Breiman and Adele Cutler‚ R port by Andy Liaw and Matthew Wiener. Description Classification and regression based on a forest of trees using random inputs. Maintainer Andy Liaw <andy_liaw@merck.com> License GPL (>= 2) URL http://stat-www.berkeley.edu/users/breiman/RandomForests
Premium Regression analysis Data Prediction
Problem Set 3 Problem Set 3 is to be completed by 11:59 p.m. (ET) on Monday of Module/Week 6. 1. Data for the market for graham crackers is shown below. Calculate the elasticity of demand between the following prices. Price of crackers Quantity Demanded (per month) $3 80 $2.5 120 $2 160 $1.5 200 $1 240 $1.00 - $1.50: Elasticity of demand equals .45; favoring inelasticity $1.50 - $2.00: Elasticity of demand equals .78; favoring inelasticity $2.00 - $2.50: Elasticity of demand equals 1.29; favoring
Premium Economics Supply and demand
ENVS 105 Question Set Section #3 Fall 2014 Answer the following questions for your homework. Work on the questions after we have covered the topic in class. Bring any questions to class or office hours. These questions will help you on the exam. If you do not do them‚ the points will add up and hurt your grade. To get credit‚ you must: Answer all questions Answer all parts of each question Type your answers Do complete and conscientious work Write out‚ number‚ and letter all questions Use regular
Premium Population ecology Population Population growth
will have a quiz on 04th of Sep. at the beg. of the class and some questions similar to the HW will be asked. Please come to the class early so that you do not miss the quiz! 1. Run a regression between price and area (sqft) for data in “housing ” worksheet. a. Estimate the population simple linear regression line that shows a relationship between the area and price of a house. (Price depends on the size of the house) b. Interpret the intercept and the slope of the line. c. Estimate the standard
Premium Regression analysis Statistics Linear regression
Data migration • Data migration is the process of transferring data between storage types‚ formats‚ or computer systems. • Data migration is usually performed programmatically to achieve an automated migration‚ freeing up human resources from tedious tasks. • It is required when organizations or individuals change computer systems or upgrade to new systems. • To achieve an effective data migration procedure‚ data on the old system is mapped to the new system providing a design
Premium Data management